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You searched for: Creator Personal Names Callen, A. C. Remove constraint Creator Personal Names: Callen, A. C. Digital Content No Digital Content Remove constraint Digital Content: No Digital Content All Subjects Coal mines and mining--Explosives. Remove constraint All Subjects: Coal mines and mining--Explosives.
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1. Extension study course in coal mining explosives.

Creator Personal:
Callen, A. C.
Title:
Extension study course in coal mining explosives.
Call Number:
P3518
Date:
1924
Description:
Monograph.
Subject Topical:
Coal mines and mining--Explosives., Explosives.
All:
Coal mines and mining--Explosives., Explosives.